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life after Velvet

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life after Velvet

Postby retro » Fri 18 May, 2018 2:56 pm

I have a 250 ltr display reef tank ,was unfortunate enough to get a dose of Velvet Decease ,have quarantined remaining fish and treating with Seachem Cuprimine ,
the display has 12 corals of different types and sizes ,heaps of rock ,large skimmer ,UV sterilizer in sump and the Nitrate levels are up to 20 ppm within a week of large water change ,I think the tank has started cycling again and it is in 3rd week of Fallow ,
QUESTION
do I persist in large weekly water changes and hopefully save the corals ,will this cycle out soon
do i take the corals out and place in a small separate bare bottom tank
retro
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Re: life after Velvet

Postby oceanarium » Sat 19 May, 2018 10:25 am

I take it your treating the copper in the QT?

Any idea what is the cause of the cycle? Were any treatments used in the display at all?

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Re: life after Velvet

Postby retro » Sat 19 May, 2018 12:31 pm

Yes ,Treating Seach Cuprimine ( copper)in the Quarantine tank,
all I can think of is when I pulled all the fish out of the Display tank the culture had nothing to feed on and began dying ,just like live rock ,when you get it ,it has to cycle because it's had nothing to feed on and then has to rebuild a culture (colony)
there has been no added chemicals in the display tank
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Re: life after Velvet

Postby oceanarium » Sun 20 May, 2018 10:41 am

Live rock cycle is caused buy the process of collecting and shipping it dry, the life dies during the process and decays in the display tank.

Nitrate in itself of 20ppm, is not indication of any sort of die off. Have you tested for ammonia ? What were the nitrates doing before this happened?

You should have no food going in so less potential for NO3 building up, but there may have been a change in the balance between N and P if your carbon dosing perhaps? Are you feeding corals?

If you could give as much info about what has happened, how long the tank has been running, and water parameters etc it will help people give you some more informed idea's. Otherwise it is largely a guessing game without seeing the tank.
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